Phase Locked Dielectric Resonator Oscillators (PLDRO)

FEI-Elcom Tech, Inc.’s miniature SPDRO sources employ a unique technique to phase-lock a microwave DRO to an external crystal reference, typically 5, 10, 50, 100 or 600 MHz. The technique utilizes a single loop for reliable phase-lock performance. By using one loop, size, power consumption and cost are minimized. These units are ideal for digital Radio, SATCOM and instrumentation.

Digital Radio, SATCOM and Instrumentation


  • Single Loop, Locks to crystal reference (typically 10 MHz)
  • Ultra Low Phase Noise
  • -100 dBc Spurious
  • Very low Microphonics
  • Zero Phase Hits
  • Wide Operating Temperature Range
  • Low DC Power Consumption
  • Low Profile, Small Size
  • Meets MIL-STD-188 and IESS 308
phase lock

Technical Data Sheets
SPDRO Series